package cn.hl.hm.util.intecepor;

import cn.hl.hm.util.json.GsonUtils;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.type.TypeHandlerRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Properties;


/**
 * 
 * @Description:   输出sql的 语句及执行参数和执行时间
 * @author: xianghan
 * @date:   2016年5月26日 下午11:50:20   
 *
 */
@Intercepts({
        @Signature(type = Executor.class, method = "update", args = { MappedStatement.class, Object.class }),
        @Signature(type = Executor.class, method = "query", args = { MappedStatement.class, Object.class,
                RowBounds.class, ResultHandler.class }) })
public class SqlParameterInterceptor implements Interceptor {
 
    private Properties properties;
    private Logger log=LoggerFactory.getLogger(SqlParameterInterceptor.class);
    
    public Object intercept(Invocation invocation) throws Throwable {
        MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
        Object parameter = null;
        Object returnValue = null;
        //输出sql的参数
        if (invocation.getArgs().length > 1) {
        	
            parameter = invocation.getArgs()[1];
            String sqlId = mappedStatement.getId();
            BoundSql boundSql = mappedStatement.getBoundSql(parameter);
            
            Configuration configuration = mappedStatement.getConfiguration();
            
            returnValue = invocation.proceed();
            //输出sql的参数
        	log.warn("sql.parameter:"+ GsonUtils.toJson(parameter));
            //输出sql的语句及参数，以及执行时间
            String sql = getSql(configuration, boundSql, sqlId);
            log.warn("excute.sql.and.parameter:"+sql);
            
        }else{
        	returnValue = invocation.proceed();
        }
        
        return returnValue;
    }
 
    public static String getSql(Configuration configuration, BoundSql boundSql, String sqlId) {
        String sql = showSql(configuration, boundSql);
        StringBuilder str = new StringBuilder(100);
        str.append(sqlId);
        str.append(":");
        str.append(sql);
        return str.toString();
    }
 
    private static String getParameterValue(Object obj) {
        String value = null;
        if (obj instanceof String) {
            value = "'" + obj.toString() + "'";
        } else if (obj instanceof Date) {
            DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.CHINA);
            value = "'" + formatter.format(new Date()) + "'";
        } else {
            if (obj != null) {
                value = obj.toString();
            } else {
                value = "";
            }
 
        }
        return value;
    }
 
    public static String showSql(Configuration configuration, BoundSql boundSql) {
        Object parameterObject = boundSql.getParameterObject();
        List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
        String sql = boundSql.getSql().replaceAll("[\\s]+", " ");
        if (parameterMappings.size() > 0 && parameterObject != null) {
            TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
            if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
                sql = sql.replaceFirst("\\?", getParameterValue(parameterObject));
 
            } else {
                MetaObject metaObject = configuration.newMetaObject(parameterObject);
                for (ParameterMapping parameterMapping : parameterMappings) {
                    String propertyName = parameterMapping.getProperty();
                    if (metaObject.hasGetter(propertyName)) {
                        Object obj = metaObject.getValue(propertyName);
                        sql = sql.replaceFirst("\\?", getParameterValue(obj));
                    } else if (boundSql.hasAdditionalParameter(propertyName)) {
                        Object obj = boundSql.getAdditionalParameter(propertyName);
                        sql = sql.replaceFirst("\\?", getParameterValue(obj));
                    }
                }
            }
        }
        return sql;
    }
 
    public Object plugin(Object target) {
    	//System.out.println("plugin");
        return Plugin.wrap(target, this);
    }
 
    public void setProperties(Properties properties0) {
    	//System.out.println("setProperties");
        this.properties = properties0;
    }
}
